Nested pouring hot runner system
- Details
- Category: Molybdenum knowledge
- Published on 31 March 2015
- Written by limei
- Hits: 171
Nested pouring hot runner system, through the smooth plastic flow channel (OPEN PIPE) into the mold cavity. Gate to plastic flow pressure loss. Nested pouring hot runner systems is more suitable for medium size parts by weight or by injection molding. The advantage of using nested pouring hot runner system is passing through the gate when the plastic mold filling low shear rates experienced after the parts forming small residual stress, less deformation, mechanical strength of the parts better. Compared with the hot tip gate, pouring nested gate size is bigger, so the gate mark may also be relatively large. Therefore, the internal structure of the gate under normal circumstances can be less demanding aesthetic level sets made by pouring hot runner systems. And application of hot tip hot runner system similar to the control gate at the plastic temperature and mold temperature is extremely important. Need around the gate to set separate cooling circuit. Because nested pouring gate size is relatively large, the temperature control if the gate is not good, the more prone to the gate in the open-sealed plastic flowing live issue. Nozzle inserts nested pouring hot runner systems also have a variety of sizes and shapes change manufacturing materials, in conjunction with the processing of plastics For species (such as crystalline or non-crystalline plastic plastic) and gate cooling etc. to consider.
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